Relay for telegraphs.



J. SCOTLAND.

RELAY FOR TELEGRAPHS. APPLICATION IILED JULY 10, 1907.

904,367. Patented Nov. 17, 1908.

2 SHEETS-SHEET 1.

WITNESSES 3 INVE/V 70/? 47/11; 6.5 JrozlanQ alawiv/ a4.

ATTORNEYS J. SCOTLAND. RELAY FOR TELEGRAPHS. APPLICATION FILED JULY 10,1907.

Patented Nov. 17, 1908.

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WITNESSES A TTOENEYS UNITED STATES PATENT OFFICE.

JAMES SCOTLAND, 0F HEARTS CONTENT, NEWFOUNDLAND.

RELAY FOR TELEGRAPHS.

Application filed July 10, 1907.

I To all whom it may concern:

Be it known that I, JAMES Scormxn, a subject of the King of GreatBritain, and a resident of Hearts Content, Newfoundland, have invented anew and Improved Relay for Telegraphs, of which the following is a full,clear, and exact description.

My invention relates to the art of telegraphy and has for its object toprovide a relay which is more sensitive than those heretofore known.

A further object is to so construct the relay that there will be agreater and a more rapid demagnetization when the circuit on the mainline is broken.

Another object is to construct the several members and so assemble themthat there will be a greater margin to the rise and fall of potential ofthe magnet when the circuit on the main line is made and brokenrespectively.

A further object of the invention is to assemble the members so that thelines of magnetic force will be so disposed that they will be utilizedto the greatest extent to produce the result desired.

A still further object is to provide a relay which issimple inconstruction, economical to manufacture and one which will take up verylittle space.

In this specification I will describe the construction shown in theaccompanying drawings but I do not limit myself thereto,

as I consider myself entitled to all forms and embodiments of theinvention which may be held to fall within the scope of the appendedclaims.

In the drawings similar characters of reference refer to similar partsin all the tigures, in which Figure 1 is a plan view of the invention;Fig; 2 is a sectional side elevation of the same; Fig. 3 is a section online 3 3 of 'Fig. 2; Fig. t is a section on line 4l of Fig. 2; and Fig.5 isa sectional side eleva tion of a modified means of adjusting thescrew which supports the electro-magnet.

Referring to the drawings, it will be seen that the several members andparts are supported on a base 1, and that there are two standards 2 and3, respectively, a frame 4, and a plate 15 which supports the severalparts. The cylinder 5 is made of soft iron and serves as an armor forthe electro-magnet. Thecylinder 5 has a head 16 atone end, said headhaving a small opening 17,

Specification of Letters Patent.

Patented Nov. 1'7, 1908.

Serial No. 383,079.

through which is disposed a screw 8 which supports the core 7 of theelectroanagnet. Another head 18, of the cylinder has an opening thereinwhich is larger than the core of the electro-magnet, and the spacebetween the said head 18 and the core 7 and the electro magnet, andbetween the head 16 and the electro-magnet, is occupied by anonconducting material 11.

The wiring of the elcctro magnet is represented by the character 6 andthis wifing may be done in any of the improved methods. The soft ironcore 7 of the electromagnet around which the wire is wound. is disposedwithin the cylinder 5 and serves as the armor, but it is not inelectrical contact therewith, by reason of the non-conducting mica orother non-conducting material 11, at the ends of the cylinder betweenthe heads thereof and the core. The core 7 and the armor 7 have each aradial slot 19, the said slot in the core extending to the centerthereof. These slots assist in the rapid demagnetization when the maincircuit is broken. The core 7 is supported by the nonconducting screw 8,which passes through the opening in the end of the armor and is mountedin a bearing on the standard 3. The screw 8 is adjustable in the saidbearing longitudinally, and is held in predetermined positions by a nut9, in connection with a spring 10, said spring being mounted on thescrew between the bearing and the head 16; or the core 7 may be adjustedin the bearing of the standard, as shown in the modification, Fig. Inthis modification, the screw has a flange 20, which presses against thehead 16, and the screw is held in position in the bearing by two nuts 9which turn in opposite directions respectively. The cylinder 5 whichserves an armor is supported on the frame I which frame extends abovethe armor as shown at 12, and has an arm 13 with a depending flange 1st.In the flange 14 and in the main member of the frame l, are stop contactpoints 21 and 22 respectively. These points are adjustable in the saidframe, and the shanks of these points have screwthreads which emneshwith threads in 'the frame and the ends of these shanks have milledheads 23, by which they may 'be turned to and from. each other. On theseshanks are mounted nuts 21, which screw against the frame and assist inthe close adjustment of the stop contact points 21 and 22. A contact arm25 is supported by'two contact point 22.

flexible upright pieces of thin metal 26, and these pieces are securedin the brass 'base plate 15. The contact arm 25, has a contact point 27,which registers with the front stop This contact arm carries an armature28 which .registers with the core 7 of the electro-magnet. A sprin 29 ispro vided, which is secured at one end to the contact arm 25 and at theother end to a cord 30, which winds on a spindle 31 by an adjustingdevice. This spindle is journaled in a bearing 41 and has at one end amilled head 32 by which it may be readily turned. The bearing 31 ismounted on a rod 33, which is journaled in the support 2, and is held inposition by a screw 34, which screws down on the said. bar 33. Bindingposts 35, 36, 37 and 38 are provided, and thewiring is arranged in theusual manner, the main line circuit being connected by the binding posts37 and 38 and the local circuit by the binding posts 35 and 36. The maincurrent will then energize the electro-magnet which will draw thearmature 28 in the usual way and will bring the contact point 27 intocontact with the front contact point 22, and will thus complete thelocal circuit, in which there is a suitable battery and sounder, and thecurrent will pass through the relay from the binding post 35 by the wire39 to the contact arm 25 to the contact point 27 to the contact point22, the frame 4, the wire 40 and the binding post 36.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A relay, having a cylindrical armor for the electro-magnet, saidarmor and the core of the electro-magnet having slots, and nonconductorsseparating the core from its armor.

2. A relay, having an armor for the electromagnet, the said ar'mor notbeing in electrical contact with the core of the electro-magnet, radialslots in the said armor some? and core respectively, and anon-conducting support for the said core.

3. A relay, having an armor for the electro-magnet, the said armor notbeing in electrical contact with the core of the electromagnet, slots inthe said armor and core respectively, a non-conducting support for thesaid core, a standard having a bearing in which the non-conductingsupport is mounted, said non-conducting support being adjustable in thesaid bearing, and means to secure the support in predeterminedpositions. I

4. A relay, having an electro-magnet, an armor therefor, the said armorand the core of the electro-magnet not being in electrical contact,longitudinal slots in the said armor and electro-magnet, a contact arm,an armature and a contact point mounted on the said contact arm, backand front stop contact points, and main and local circuits as specified.

5. In a relay, an electromagnet, the core of the electromagnet beingsolid and having a longitudinal groove therein which extendsapproximately to the center of the core, a cylindrical armor for theelectromagnet which has a longitudinal slot therein, and

non-conductors separating the core from its armor.

6. A relay having a cylindrical armor for the electromagnet, the saidarmor and the core of the electromagnet having slots therein,non-conductors separating the core from its armor, and a head for thecylindrical armor which is in close proximity to the core of theelectromagnet.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES SCOTLAND.

